Technical Another cracked flathead question

I know the cracks around the water jacket to head bolts ain't a big deal, but what about theses?

 

It doesn't appear you have any making there way to valve seats or cylinders so I would think you are good to go.

 

No there none between the cylinders and valves just the usually water jackets to head bolts and theses two places.

 

I don't think you have anything to worry about. Proceed with the rebuild.

 

Old timers would say that those cracks came with a Ford part number. Like the previously posted, no worries.

 

I didn't think they were a issue, just needed reassured. Any need to helicoil them or just use studs and sealer?

 

Most "no cracks" flat heads will have those cracks. It's like a car with "no rust" just means most of the panels are still there. Edit, don't use a tap to clean the threads and don't over torque.

 

Just use a really good sealer on the studs so it doesn't weep out the head.

 

Thanks

 

I thought those were factory.

 

Is there any other kind ?

 

Used number 2 Permatex per my machinist's recommendation. No leaks but I'm sure others will have other suggestions for a sealer.

 

Early Hemis rarely crack.